Highly Efficient Laser Scribed Graphene Electrodes for On-Chip Electrochemical Sensing Applications

Handle URI:
http://hdl.handle.net/10754/622106
Title:
Highly Efficient Laser Scribed Graphene Electrodes for On-Chip Electrochemical Sensing Applications
Authors:
Nayak, Pranati; Kurra, Narendra ( 0000-0002-0916-7902 ) ; Xia, Chuan ( 0000-0003-4526-159X ) ; Alshareef, Husam N. ( 0000-0001-5029-2142 )
Abstract:
This study reports the fabrication of flexible electrochemical sensors using a direct-write laser scribing process that transforms commercial polyimide sheet into graphitic carbon with self-standing porous 3D morphology, and abundant edge planes. The heterogeneous electron transfer rate (k0) of the laser scribed graphene (LSG) electrodes for both inner-sphere and outer-sphere redox mediators, ferrocyanide ([Fe(CN)6]4-) and hexaammineruthenium ([Ru(NH3)6]3+) are estimated to be 0.1150 and 0.0868 cm s-1, respectively. These values are significantly higher than those for similar carbon based materials, which this study ascribes to the binder free 3D porous network of LSG with enriched edge plane sites. Further, k0 is enhanced up to 0.2823 and 0.2312 cm s-1 for inner and outer-sphere redox mediators by selective anchoring of Pt nanoparticles over LSG. The LSG electrodes exhibit significantly improved electrocatalytic activity toward oxidation of ascorbic acid (AA), dopamine (DA), and uric acid (UA). Consequently, the detection of these biomarkers is achieved with high sensitivity of 237.76 and 250.69 μA mm-1 cm-2 (AA), 2259.9 and 6995.6 μA mm-1 cm-2 (DA) and 5405 and 8289 μA mm-1 cm-2 (UA) for LSG and Pt/LSG electrodes, respectively, in a wide concentration range. These results outperform previously reported 2D/3D graphene based electrodes. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
KAUST Department:
Materials Science and Engineering Program
Citation:
Nayak P, Kurra N, Xia C, Alshareef HN (2016) Highly Efficient Laser Scribed Graphene Electrodes for On-Chip Electrochemical Sensing Applications. Advanced Electronic Materials 2: 1600185. Available: http://dx.doi.org/10.1002/aelm.201600185.
Publisher:
Wiley-Blackwell
Journal:
Advanced Electronic Materials
Issue Date:
11-Aug-2016
DOI:
10.1002/aelm.201600185
Type:
Article
ISSN:
2199-160X
Sponsors:
The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST). The authors wish to thank Mr. Qiu Jiang for help with the contact angle measurements.
Additional Links:
http://onlinelibrary.wiley.com/doi/10.1002/aelm.201600185/full
Appears in Collections:
Articles; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorNayak, Pranatien
dc.contributor.authorKurra, Narendraen
dc.contributor.authorXia, Chuanen
dc.contributor.authorAlshareef, Husam N.en
dc.date.accessioned2017-01-01T13:18:23Z-
dc.date.available2017-01-01T13:18:23Z-
dc.date.issued2016-08-11en
dc.identifier.citationNayak P, Kurra N, Xia C, Alshareef HN (2016) Highly Efficient Laser Scribed Graphene Electrodes for On-Chip Electrochemical Sensing Applications. Advanced Electronic Materials 2: 1600185. Available: http://dx.doi.org/10.1002/aelm.201600185.en
dc.identifier.issn2199-160Xen
dc.identifier.doi10.1002/aelm.201600185en
dc.identifier.urihttp://hdl.handle.net/10754/622106-
dc.description.abstractThis study reports the fabrication of flexible electrochemical sensors using a direct-write laser scribing process that transforms commercial polyimide sheet into graphitic carbon with self-standing porous 3D morphology, and abundant edge planes. The heterogeneous electron transfer rate (k0) of the laser scribed graphene (LSG) electrodes for both inner-sphere and outer-sphere redox mediators, ferrocyanide ([Fe(CN)6]4-) and hexaammineruthenium ([Ru(NH3)6]3+) are estimated to be 0.1150 and 0.0868 cm s-1, respectively. These values are significantly higher than those for similar carbon based materials, which this study ascribes to the binder free 3D porous network of LSG with enriched edge plane sites. Further, k0 is enhanced up to 0.2823 and 0.2312 cm s-1 for inner and outer-sphere redox mediators by selective anchoring of Pt nanoparticles over LSG. The LSG electrodes exhibit significantly improved electrocatalytic activity toward oxidation of ascorbic acid (AA), dopamine (DA), and uric acid (UA). Consequently, the detection of these biomarkers is achieved with high sensitivity of 237.76 and 250.69 μA mm-1 cm-2 (AA), 2259.9 and 6995.6 μA mm-1 cm-2 (DA) and 5405 and 8289 μA mm-1 cm-2 (UA) for LSG and Pt/LSG electrodes, respectively, in a wide concentration range. These results outperform previously reported 2D/3D graphene based electrodes. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.en
dc.description.sponsorshipThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST). The authors wish to thank Mr. Qiu Jiang for help with the contact angle measurements.en
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1002/aelm.201600185/fullen
dc.subjectAscorbic aciden
dc.subjectDopamineen
dc.subjectElectrochemical biosensorsen
dc.subjectLaser scribed grapheneen
dc.subjectUric aciden
dc.titleHighly Efficient Laser Scribed Graphene Electrodes for On-Chip Electrochemical Sensing Applicationsen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.identifier.journalAdvanced Electronic Materialsen
kaust.authorNayak, Pranatien
kaust.authorKurra, Narendraen
kaust.authorXia, Chuanen
kaust.authorAlshareef, Husam N.en
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